William MacMillan (#2362)
- $ 2 B
- Cargill
- United States
- M
- 71 Years
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About Me
William MacMillan is one of 21 billionaire heirs to Cargill, the world's biggest agriculture business. His great-great-grandfather, W.W. Cargill, founded the business as a single grain warehouse on the end of an Iowa railroad line in 1865. The family still owns roughly 90% of Cargill, which did $154 billion in 2025 sales across food, agriculture, financial and industrial divisions. The Cargill-MacMillan family collects an estimated 18% of net profits as dividends every year.
Achievements
Career Highlights
A snapshot of the defining milestones, leadership decisions, and breakthroughs that shaped William MacMillan’s rise and global influence.
Wealth Growth
Net Worth Growth Over Time
Tracking William MacMillan’s net worth journey over the years, highlighting key growth phases and financial milestones.
Current Net Worth: $1.8B
(May 4, 2026)
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